GUID-AF231615-E62E-4EC0-BA82-A81235061F8D-high.jpg [High]
Fig. 17
2.1.4.1 Generic table of tightening torques for nuts and screws, in Nm
Thread in inches, LOW torque
Class
ISO 4.6 = SAE 1
ISO Class 8.8 = SAE 5
ISO Class 10.9 = SAE 8
Track
Nom.
Max.
Min.
Nom.
Max.
Min.
Nom.
Max.
Min.
1/4"
5.6
6.4
4.8
10.4
12.0
8.8
15.5
18.0
13.0
5/16"
11.3
13.0
9.6
21.0
24.0
18.0
29.5
34.0
25.0
3/8"
21.0
24.0
18.0
36.5
42.0
31.0
52.0
60.0
44.0
7/16"
33.0
38.0
28.0
60.0
69.0
51.0
84.0
96.0
72.0
1/2"
50.0
57.0
43.0
92.0
104.0
80.0
125.0
140.0
110.0
5/8"
100.0
110.0
90.0
185.0
210.0
160.0
260.0
300.0
220.0
3/4"
175.0
200.0
150.0
325.0
370.0
280.0
460.0
530.0
390.0
7/8"
290.0
330.0
250.0
530.0
610.0
450.0
745.0
850.0
640.0
1"
435.0
500.0
370.0
785.0
900.0
670.0
1120.0
1280.0
960.0
1 1/8"
450.0
510.0
390.0
970.0
1100.0
840.0
1560.0
1760.0
1360.0
1 1/4"
630.0
720.0
540.0
1400.0
1600.0
1200.0
2240.0
2560.0
1920.0
1 1/2"
1130.0
1300.0
960.0
2400.0
2700.0
2100.0
3800.0
4320.0
3280.0
2.1.4.2 Generic table of tightening torques for nuts and screws, in Nm
ISO metric thread, NORMAL torque
Class
ISO 4.6 = SAE 1
ISO Class 8.8 = SAE 5
ISO Class 10.9 = SAE 8
Track
Nom.
Max.
Min.
Nom.
Max.
Min.
Nom.
Max.
Min.
M3
0.6
0.7
0.5
1.5
1.7
1.3
2.1
2.4
1.8
M4
1.4
1.6
1.2
3.6
4.1
3.1
5.0
5.7
4.3
M5
2.6
3.0
2.2
7.0
8.0
6.0
10.0
11.5
8.5
M6
4.5
5.0
4.0
12.0
14.0
10.0
17.0
20.0
14.0
M8
11.0
12.5
9.5
30.0
35.0
25.0
41.0
46.0
36.0
M10
22.0
25.0
19.0
60.0
70.0
50.0
84.0
96.0
72.0
M12
38.0
43.0
33.0
105.0
120.0
90.0
140.0
160.0
120.0
4
GUID-6C2F70B0-271F-4847-94CD-E743B9167ADD [V1]
GUID-2D2EC878-FA6A-4797-993A-79D287435140 [V1]
2. General Info
HiTech
2-9
ACW3452230
